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nl-neigh-delete.c

/*
 * src/nl-neigh-delete.c     Delete a neighbour
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation version 2.1
 *    of the License.
 *
 * Copyright (c) 2003-2009 Thomas Graf <tgraf@suug.ch>
 */

#include <netlink/cli/utils.h>
#include <netlink/cli/neigh.h>
#include <netlink/cli/link.h>

static int quiet = 0, default_yes = 0, deleted = 0, interactive = 0;
struct nl_sock *sock;

static void print_usage(void)
{
      printf(
      "Usage: nl-neigh-delete [OPTION]... [NEIGHBOUR]\n"
      "\n"
      "Options\n"
      " -i, --interactive     Run interactively\n"
      "     --yes             Set default answer to yes\n"
      " -q, --quiet           Do not print informal notifications\n"
      " -h, --help            Show this help\n"
      " -v, --version         Show versioning information\n"
      "\n"
      "Neighbour Options\n"
      " -a, --addr=ADDR       Destination address of neighbour\n"
      " -l, --lladdr=ADDR     Link layer address of neighbour\n"
      " -d, --dev=DEV         Device the neighbour is connected to\n"
      "     --family=FAMILY   Destination address family\n"
      "     --state=STATE     Neighbour state, (default = permanent)\n"
      );

      exit(0);
}

static void delete_cb(struct nl_object *obj, void *arg)
{
      struct rtnl_neigh *neigh = nl_object_priv(obj);
      struct nl_dump_params params = {
            .dp_type = NL_DUMP_LINE,
            .dp_fd = stdout,
      };
      int err;

      if (interactive && !nl_cli_confirm(obj, &params, default_yes))
            return;

      if ((err = rtnl_neigh_delete(sock, neigh, 0)) < 0)
            nl_cli_fatal(err, "Unable to delete neighbour: %s\n",
                       nl_geterror(err));

      if (!quiet) {
            printf("Deleted ");
            nl_object_dump(obj, &params);
      }

      deleted++;
}

int main(int argc, char *argv[])
{
      struct rtnl_neigh *neigh;
      struct nl_cache *link_cache, *neigh_cache;
 
      sock = nl_cli_alloc_socket();
      nl_cli_connect(sock, NETLINK_ROUTE);
      link_cache = nl_cli_link_alloc_cache(sock);
      neigh_cache = nl_cli_neigh_alloc_cache(sock);
      neigh = nl_cli_neigh_alloc();
 
      for (;;) {
            int c, optidx = 0;
            enum {
                  ARG_FAMILY = 257,
                  ARG_STATE = 258,
                  ARG_YES,
            };
            static struct option long_opts[] = {
                  { "interactive", 0, 0, 'i' },
                  { "yes", 0, 0, ARG_YES },
                  { "quiet", 0, 0, 'q' },
                  { "help", 0, 0, 'h' },
                  { "version", 0, 0, 'v' },
                  { "addr", 1, 0, 'a' },
                  { "lladdr", 1, 0, 'l' },
                  { "dev", 1, 0, 'd' },
                  { "family", 1, 0, ARG_FAMILY },
                  { "state", 1, 0, ARG_STATE },
                  { 0, 0, 0, 0 }
            };
      
            c = getopt_long(argc, argv, "qhva:l:d:", long_opts, &optidx);
            if (c == -1)
                  break;

            switch (c) {
            case 'i': interactive = 1; break;
            case ARG_YES: default_yes = 1; break;
            case 'q': quiet = 1; break;
            case 'h': print_usage(); break;
            case 'v': nl_cli_print_version(); break;
            case 'a': nl_cli_neigh_parse_dst(neigh, optarg); break;
            case 'l': nl_cli_neigh_parse_lladdr(neigh, optarg); break;
            case 'd': nl_cli_neigh_parse_dev(neigh, link_cache, optarg); break;
            case ARG_FAMILY: nl_cli_neigh_parse_family(neigh, optarg); break;
            case ARG_STATE: nl_cli_neigh_parse_state(neigh, optarg); break;
            }
      }

      nl_cache_foreach_filter(neigh_cache, OBJ_CAST(neigh), delete_cb, NULL);

      if (!quiet)
            printf("Deleted %d neighbours\n", deleted);

      return 0;
}

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